The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 20, 2015
Filed:
Oct. 23, 2006
Gerardus Petrus Karman, 'S-Gravenhage, NL;
Marc Wilhelmus Gijsbert Ponjee, Eindhoven, NL;
Gerardus Petrus Karman, 'S-Gravenhage, NL;
Marc Wilhelmus Gijsbert Ponjee, Eindhoven, NL;
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
A light emitting device comprises a substrate () and an arrangement of light emitting elements () provided over the substrate. The substrate has a contoured surface which defines at least first and second regions (), having normal directions which face in different directions. The light emitting elements () comprise directional light emitting elements, and are provided on the first and second regions (), thereby to define first and second light emission directions. This arrangement provides light source elements on a structured (topographically non-flat) substrate in a device, such that the angular distribution of light emitted by the device can be electronically adapted by controlling the light emission per light-emitting area.